Api Endpoint

Pay Guard

Pay Guard: pre-payment allow/warn/block check for x402. Send your planned purchase (domain, max_price_usd, asset/network) plus the 402 challenge (payTo, amount, asset, network, resource). Returns verdict with wallet↔domain verification, price/asset/network checks, lookalike/URL safety, wash flags from Agentropolis, and a free OFAC SDN sanctions screen of payTo (a screen, not a certificate). Deterministic, no LLM.

Open interactive test console

Offering

Provider: seenly-pay-guard.vercel.app
Method: POST
Offering type: Api Endpoint
Transport type: http
Category: Security
Delivery: Not provided
Pricing model: Not provided
x402 version: 2

Endpoint context

URL: https://seenly-pay-guard.vercel.app/api/guard
MIME type: Not provided
First seen: 2026-10-16T01:50:45.949Z
Last seen: 2026-11-01T15:06:40.170Z
Tags: Security, X402, payment-guard, fraud, lookalike

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1: 0.01 USDC
Atomic price: 10000 · Network: eip155:8453 · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "payTo": "0xeE6239F3E17bEBe5e89F21F29D74D68CAa0d78CE"
  }
]

Observed health

Status: Healthy
Latest latency: 50 ms
Average latency: 269 ms
HTTP status: 204
Last checked: 2026-11-01T21:00:45.141Z
Reachability: 100% over 14 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "additionalProperties": false,
  "properties": {
    "body": {
      "additionalProperties": true,
      "properties": {
        "amount": {
          "type": "string"
        },
        "asset": {
          "default": "USDC",
          "type": "string"
        },
        "challenge": {
          "description": "The x402 402 challenge / accept entry the agent received.",
          "properties": {
            "amount": {
              "description": "Atomic USDC units (6 decimals), e.g. \"10000\" = $0.01.",
              "type": "string"
            },
            "asset": {
              "type": "string"
            },
            "network": {
              "type": "string"
            },
            "payTo": {
              "type": "string"
            },
            "resource": {
              "description": "HTTPS resource URL from the 402.",
              "type": "string"
            }
          },
          "required": [
            "payTo",
            "amount"
          ],
          "type": "object"
        },
        "domain": {
          "description": "Planned seller domain / host the agent intends to pay.",
          "type": "string"
        },
        "listed_price_usd": {
          "description": "Optional expected listed price from the agent’s plan.",
          "minimum": 0,
          "type": "number"
        },
        "max_price_usd": {
          "description": "Hard cap the agent will not exceed (USD).",
          "minimum": 0,
          "type": "number"
        },
        "network": {
          "default": "eip155:8453",
          "type": "string"
        },
        "payTo": {
          "description": "Shortcut: challenge.payTo at top level.",
          "type": "string"
        },
        "requestKey": {
          "maxLength": 128,
          "type": "string"
        }
      },
      "required": [
        "max_price_usd"
      ],
      "type": "object"
    },
    "bodyType": {
      "enum": [
        "json",
        "form-data",
        "text"
      ],
      "type": "string"
    },
    "method": {
      "enum": [
        "POST"
      ],
      "type": "string"
    },
    "type": {
      "const": "http",
      "type": "string"
    }
  },
  "required": [
    "type",
    "method",
    "bodyType",
    "body"
  ],
  "type": "object"
}

Output schema

{
  "properties": {
    "example": {
      "properties": {
        "advice": {
          "type": "string"
        },
        "checks": {
          "type": "object"
        },
        "coverage": {
          "type": "object"
        },
        "reasons": {
          "items": {
            "type": "string"
          },
          "type": "array"
        },
        "verdict": {
          "enum": [
            "allow",
            "warn",
            "block"
          ],
          "type": "string"
        }
      },
      "required": [
        "verdict",
        "reasons",
        "checks"
      ],
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}